“alcohol / sake” in Japanese is 酒, read shu, saka, sake (しゅ, さか, さけ). It is a Grade 3 Kyōiku kanji, taught in year 3 of Japanese elementary school, and appears in words such as 日本酒 (sake).
What does 酒 mean?
父はお酒を飲む。
Same sound, different character — the classic trap. Compare them side by side: